Novel methodology for methane emissions measurement

根据国际能源署(IEA)的数据，碳氢化合物生产作业每年间接排放的温室气体(GHG)总量目前为52亿吨二氧化碳当量，占能源部门温室气体排放总量的15%。甲烷是间接排放中最大的单一组分，其全球变暖潜力是二氧化碳的28-34倍[4]。燃烧和排放的废物占全球天然气产量的8%，占全球温室气体排放量的6%。在英国，2019年燃烧了42bcf的天然气。这相当于英国1类(现场作业直接排放)二氧化碳排放量的四分之一[6]。世界银行提出的“2030年前零常规燃烧”要求各国政府、能源运营商和发展机构在2030年前消除常规燃烧。能源部门面临的根本挑战是以全面和具有成本效益的方式检测和量化甲烷排放。甲烷排放系数的量化取决于许多因素，如气体成分、设施设计、操作条件的严酷程度和其他操作实践。根据目前的工作实践，很难准确地量化甲烷排放量，因为来源可能被忽视、测量不安全或超过测量技术的最大排放速率。此外，甲烷浓度随着工艺系统中化学品使用的变化而变化。因此，必须定期对设施中的甲烷进行量化，以准确地量化温室气体排放。Blue Gentoo的建议是通过优化工艺设施和减少设施中的化学品使用来减少温室气体排放。这项可行性研究旨在通过使用甲醇或乙二醇作为探针来验证Ommica分析方法的使用，以确定气体中的甲烷浓度。Ommica测试将帮助碳氢化合物污染行业通过计算该设施火炬气体中甲烷的浓度来准确量化温室气体排放。经过验证的Ommica测试可能成为准确量化全球温室气体排放的新标准。无论发生什么气体燃烧，我们的愿望是我们的创新解决方案将永远存在。

Annual total indirect greenhouse gas (GHG) emissions from hydrocarbon producing operations according to International Energy Agency (IEA), currently stands at 5,200 million tonnes (Mt) of carbon dioxide equivalent, representing 15% of total energy sector GHG emissions \[2\]. Methane is the largest single component of indirect emissions, with global warming potential 28-34 times greater than CO2\[4\].Flaring and venting waste comprises of 8% global natural gas production and contributes to 6% of global greenhouse gas emissions \[1\]. In UKCS, 42 bcf of gas was flared in 2019\. This equates to a quarter of UKCS Scope 1 category (direct emissions from field operations) CO2 emissions\[6\].The "Zero Routine Flaring by 2030" introduced by the World Bank requested governments, energy operators, and development institutions to eliminate routine flaring before 2030\. The fundamental challenge the energy sector faces is the detection and quantification of methane emissions in a comprehensive and cost-effective manner. The emission factor quantification for methane depends on many factors such as gas composition, facility design, severity of operating conditions and other operational practices. It is difficult to accurately quantify methane emissions based on current working practices as sources may be overlooked, unsafe to measure, or exceed the maximum emission rate of the measurement technique. Additionally, the methane concentration varies as the chemical usage in the process system changes. Therefore, it is imperative that regular quantification of methane at the facility is required to accurately quantify the GHG emissions.Blue Gentoo's proposal is to reduce GHG emissions by optimising process facilities and reducing chemical usage at the facility. This feasibility study aims to validate the usage of Ommica assay by using either methanol, or ethylene glycol, as a probe to determine methane concentration in gas. The Ommica test will aid hydrocarbon polluting industries to accurately quantify the GHG emissions by calculating the concentration of methane in the flare gas from that facility. The validated Ommica test could become a new standard to accurately quantify global GHG emissions.Wherever gas flaring occurs our aspiration is that our innovative solution will be ever present.